345 avenue Roslyn vs 617 avenue Roslyn
Data as of October 29, 2026 · updated every week
345 avenue Roslyn is the older building (1909); 617 avenue Roslyn was built in 1913. 617 avenue Roslyn is assessed at $2,254,500, 19% more than 345 avenue Roslyn ($1,887,300). Neither has a building permit on record. Neither is in a flood zone.
| 345 avenue Roslyn | 617 avenue Roslyn | |
|---|---|---|
| Type | House or building | House or building |
| City and borough | Westmount | Westmount |
| Built | 1909 | 1913 |
| Assessed (roll) | $1,887,300 | $2,254,500 |
| Since the previous roll | +10 % | 0 % |
| Welcome tax on that value | ≈ $26,420 | ≈ $31,928 |
| Lot | 320 m² | 340 m² |
| Floor area | 198 m² | 281 m² |
| Notice of deterioration | No | No |
| City’s right of first refusal | No | No |
| Heritage | No | No |
| In a flood zone | No | No |
| Building permits on record | 0 | 0 |
| Findings | 1 Note | 2 Note |
| Nearest metro | Vendôme, 710 m | Villa-Maria, 920 m |
The full report for each address explains every finding and shows the full permit and value history.
Full report: 345 avenue Roslyn Full report: 617 avenue Roslyn